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Birth:          8 Nov 1226 of Gloucestershire, England
Death:          AFT 10 Jul 1264 

Notes
familysearch.org
https://en.wikipedia.org/wiki/Isabella_of_Gloucester_and_Hertford
Isabella de Clare (2 November 1226 – 10 July 1264) was the daughter of Gilbert de 
Clare, 4th Earl of Hertford and 5th Earl of Gloucester and Isabel Marshal. She is also 
known as Isabel de Clare, but this is however, the name of many women in her family.
Family[edit]

Isabella's maternal grandparents were William Marshal, 1st Earl of Pembroke and his 
wife Isabel de Clare, 4th Countess of Pembroke. Isabella's paternal grandparents were 
Richard de Clare, 3rd Earl of Hertford and Amice FitzRobert.

Isabella was the fourth of six children, her brother was Richard de Clare, 6th Earl of 
Hertford. Her sister, Amice de Clare married Baldwin de Redvers, 6th Earl of Devon 
and was mother of Baldwin de Redvers, 7th Earl of Devon and Isabella de Fortibus, 
Countess of Devon.

Marriage[edit]

Isabella was married on 12 May 1240 (at age thirteen and a half) to Robert de Brus, 
5th Lord of Annandale. Isabella brought to him the village of Ripe, in Sussex. Her 
husband was a candidate to become King of Scotland, after the death of the young 
Margaret, Maid of Norway. Her husband did not however succeed; Robert's rival, John 
Balliol was elected King of Scotland in 1292.[1]

Robert and Isabella had up to six children:
1.Robert (1243–1304)
2.William, married Elizabeth de Sully, without issue
3.Bernard, married firstly Alicia de Clare and married secondly Constance de Morleyn
4.Richard (died before 26 January 1287)
5.Isabella (1249 – c. 1284), married (as his first wife) Sir John FitzMarmaduke, Isabel 
was buried at Easington, county Durham.[2]

John Balliol's time as King of Scotland did not last long, he died in 1314. Isabella's 
grandson, Robert the Bruce became King of Scotland. Isabella did not however get to 
see this day, she died in 1264, aged thirty seven. Her husband married a second time, 
to Christina de Ireby, this marriage produced no children.

Despite claims to the contrary by amateur genealogists, there is no evidence that 
Isabella had other children.[3]

Parents
DE CLARE Gilbert (1182 - 25 Oct 1230)
MARSHALL Isabel (9 Oct 1200 - 17 Jan 1240)

Siblings
DE CLARE Roese (ABT 1218 - )
DE CLARE Avicia (Amica) (27 May 1220 - )
DE CLARE Richard (4 Aug 1222 - 14 Jul 1262)
DE CLARE Isabel (8 Nov 1226 - AFT 10 Jul 1264)
DE CLARE William (18 May 1228 - 28 Jul 1258)

Marriage To DE BRUCE Robert "the Competitor" (ABT 1215 - 31 May 1295)
    m. May 1240 

Notes

Parents
DE BRUCE Robert (ABT 1180 - 1245)
OF HUNTINGDON Isabelle (1199 - 1252)

Children by DE BRUCE Robert "the Competitor" ABT 1215 - 31 May 1295
DE BRUCE Robert (Jul 1243 - BEF 4 Mar 1304)

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